CN108375422A - A kind of control method, control device and system that electromagnet temperature liter is tested automatically - Google Patents
A kind of control method, control device and system that electromagnet temperature liter is tested automatically Download PDFInfo
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- CN108375422A CN108375422A CN201810086155.XA CN201810086155A CN108375422A CN 108375422 A CN108375422 A CN 108375422A CN 201810086155 A CN201810086155 A CN 201810086155A CN 108375422 A CN108375422 A CN 108375422A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a kind of electromagnet temperature to rise the control method tested automatically, wherein including：It obtains electromagnet temperature and rises testing and control parameter；Monitor electromagnet time of repose；If electromagnet time of repose reaches default time of repose, the control instruction for being attached the contact B and the contact C is sent to relay；Testing and control instruction is sent to LCR testers；It records and preserves the initial resistivity value；Control instruction is sent to relay；Monitor the high temperature seating time；Judge whether the high temperature seating time reaches the default seating time；If so, sending control instruction to relay, and control instruction is sent to delay protection circuit；Control instruction is sent to LCR testers；It records and preserves test and terminate resistance value.The control device tested automatically is risen the invention also discloses a kind of electromagnet temperature and a kind of electromagnet temperature rises Auto-Test System.Electromagnet temperature provided by the invention, which rises the control method tested automatically, realizes automatic test, and improves the safety of test.
Description
Technical field
The present invention relates to the electromagnet reliability test technical fields of internal combustion engine more particularly to a kind of electromagnet temperature to rise automatically
The control method of test, a kind of electromagnet temperature rise the control device tested automatically and rise the control tested automatically including the electromagnet temperature
The electromagnet temperature of device processed rises Auto-Test System.
Background technology
Crucial execution unit of the electromagnet as fuel injector, parameter, performance determine the acting characteristic of fuel injector, to
Influence the performance of entire common rail system.And electromagnet coil winding is when being powered on for a long time, due to the loss of coil windings,
Cause the temperature of electromagnet various components inside to increase, generates certain Wen Sheng for being higher by environment temperature.If electromagnet is run
When coil windings hottest spot temperature it is too low, then the ability of electromagnet is not fully used, and causes to waste；And hot(test)-spot temperature mistake
Height can not only shorten the service life of electromagnet, and will also insulate to coil damages, and entire electromagnet is burnt when serious.For
This《QCT 413-2002 automotive electric equipment fundamental technical specifications》Middle specified in more detail rises examination to the temperature of automobile electric product
Test requirement.
There are mainly four types of the methods for carrying out temperature rise test to electromagnet coil winding at present：Infrared thermometry method, thermocouple
Thermometry, electric-resistivity method and pre-buried method.What wherein infrared thermometry method and thermocouple thermometry were all limited only to test is electromagnet
The temperature change on surface cannot reflect the temperature change in Inside coil winding.
Pre-buried method is that thermocouple sensor is embedded on electromagnet Inside coil winding in advance, and this method can be relatively accurate
The temperature inside coil windings is reflected in real time and rises variation, but during being tested using this method, selected test point
Difference, test result is just different, and widely different between test result, this method is not suitable for the winding for having package casing, meeting in addition
It destroys envelope and turns shell.
Electric-resistivity method is that the characteristic that a certain rule is presented is varied with temperature according to the metals such as copper, aluminium and its resistance, passes through winding
The temperature of winding is calculated in the variation of adstante febre resistance, according to《QCT 413-2002 automotive electric equipment fundamental technical specifications》
Test of Temperature Rise for Electromagnet mathematical model, wherein need to know electromagnet coil winding again on-test when resistance value and
Resistance value when off-test.According to this rule winding temperature can be indirectly calculated by measuring the variation of winding resistance
The variation of degree.But the coil windings under electriferous state cannot be tested due to ohmmeter or LCR testers, so in measurement process
Middle winding also needs to be spaced after power supply disconnection could measure (practical operation is usually 5S) for several seconds, to prevent in coil windings
Inverse electromotive force burns out test equipment.But this time is difficult control when by manually switching over.In addition temperature rises examination
It is long to test typical time, if staff aside monitors, when inevitably also dozing off.In addition people during the test
Part work and part study takes and record data, and there is also certain errors.
Therefore, how real under the premise of improving Security of test when carrying out temperature rise test test to electromagnet
Now automatic test becomes those skilled in the art's technical problem urgently to be resolved hurrily.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art, it is automatic to provide a kind of electromagnet temperature liter
The control method of test, a kind of electromagnet temperature rise the control device tested automatically and rise the control tested automatically including the electromagnet temperature
The electromagnet temperature of device processed rises Auto-Test System, to solve the problems of the prior art.
As the first aspect of the invention, a kind of control method that electromagnet temperature liter is tested automatically is provided, wherein electromagnetism
It includes solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay and delay that iron temperature, which rises Auto-Test System,
It includes contact A, contact B and contact C to protect circuit, the relay, the solenoid driver circuit ECU and the relay
Contact A connects, and the electromagnet coil winding is connect with the contact B of the relay, the LCR testers and the relay
Contact C connections, the delay protection circuit connect with the LCR testers, and the control method includes：
It obtains electromagnet temperature and rises testing and control parameter, wherein when temperature liter testing and control parameter includes that electromagnet is stood
Between, the high temperature seating time, the test interval, the first number of test points and the second number of test points；
Monitor the electromagnet time of repose；
Judge whether the electromagnet time of repose reaches default time of repose；
If the electromagnet time of repose reaches default time of repose, sent to the relay by the contact B and
The control instruction that the contact C is attached；
The control instruction for the initial resistivity value for testing the electromagnet coil winding is sent to the LCR testers；
It records and preserves the initial resistivity value；
The control instruction for being attached the contact A and the contact B is sent to the relay；
Monitor the high temperature seating time；
Judge whether the high temperature seating time reaches the default seating time；
If the high temperature seating time reaches the default seating time, sent to the relay by the contact B
The control instruction being attached with the contact C, and send the LCR testers and the electromagnetism to the delay protection circuit
The control instruction of iron coil winding delay connection；
The control instruction for the test end resistance value for testing the electromagnet coil winding is sent to the LCR testers；
It records and preserves the test and terminate resistance value.
Preferably, the control method further includes carrying out in the record and after preserving test end resistance value：
It reads the initial resistivity value and the test terminates resistance value；
Terminate resistance value according to the mathematical model of Test of Temperature Rise for Electromagnet, the initial resistivity value and the test and calculates institute
State the Wen Sheng of electromagnet coil winding.
Preferably, the mathematical model of the electromagnet temperature experiment is：
Wherein, Δ t indicates the Wen Sheng, R of the electromagnet coil winding1Indicate the initial resistivity value, R2Indicate the survey
Examination terminates resistance value, and θ indicates the temperature coefficient of the electromagnet coil winding, and θ=256.41, T1It indicates when test starts
Environment temperature, T2Indicate the environment temperature at the end of test.
Preferably, the control instruction of the initial resistivity value of the test electromagnet coil winding includes：
The initial electricity of the several electromagnet coil windings of first test point is tested according to the test interval
Resistance value.
Preferably, the test that the test electromagnet coil winding is sent to the LCR testers terminates resistance value
Control instruction include：
The test knot of the several electromagnet coil windings of second test point is tested according to the test interval
Beam resistance value.
As the second aspect of the invention, electromagnet temperature is provided and rises the control device tested automatically, wherein electromagnet temperature
It includes solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay and delay protection to rise Auto-Test System
Circuit, the relay include contact A, contact B and contact C, the contact of the solenoid driver circuit ECU and the relay
A connections, the electromagnet coil winding are connect with the contact B of the relay, and the LCR testers are touched with the relay
Point C connections, the delay protection circuit are connect with the LCR testers, and the control device includes：
Parameter acquisition module, the parameter acquisition module rise testing and control parameter for obtaining electromagnet temperature, wherein described
It includes electromagnet time of repose, high temperature seating time, test interval, the first number of test points and that temperature, which rises testing and control parameter,
Two numbers of test points；
First monitoring modular, first monitoring modular is for monitoring the electromagnet time of repose；
First judgment module, first judgment module is for judging whether the electromagnet time of repose reaches default quiet
Set the time；
First instruction sending module, if first instruction sending module reaches default for the electromagnet time of repose
Time of repose then sends the control instruction for being attached the contact B and the contact C to the relay；
Second instruction sending module, second instruction sending module are used to send described in test to the LCR testers
The control instruction of the initial resistivity value of electromagnet coil winding；
First record and preserving module, first record is with preserving module for recording and preserving the initial resistance
Value；
Third instruction sending module, the third instruction sending module are used to send the contact A to the relay
The control instruction being attached with the contact B；
Second monitoring modular, second monitoring modular is for monitoring the high temperature seating time；
Second judgment module, second judgment module is for judging whether the high temperature seating time reaches default running-in
Time；
4th instruction sending module, if the 4th instruction sending module reaches described pre- for the high temperature seating time
If the seating time, then the control instruction that is attached the contact B and the contact C is sent to the relay, and to institute
State the control instruction that delay protection circuit sends the LCR testers and electromagnet coil winding delay connection；
5th instruction sending module, the 5th instruction sending module are used to send described in test to the LCR testers
The test of electromagnet coil winding terminates the control instruction of resistance value；
Second record and preserving module, second record terminate electricity with preserving module for recording and preserving the test
Resistance value.
Preferably, the control device further includes：
Read module, the read module terminate resistance value for reading the initial resistivity value and the test；
Computing module, the computing module is for mathematical model, the initial resistivity value according to Test of Temperature Rise for Electromagnet
Terminate the Wen Sheng that resistance value calculates the electromagnet coil winding with the test.
As the third aspect of the invention, a kind of electromagnet temperature liter Auto-Test System is provided, wherein the electromagnet
Temperature rises Auto-Test System：Solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay, delay are protected
Protection circuit and previously described electromagnet temperature rise the control device tested automatically,
The relay includes contact A, contact B and contact C, and the electromagnet temperature rises the control device tested automatically and institute
The control terminal connection of relay is stated, the first end of the solenoid driver circuit ECU is connect with the contact A of the relay, institute
The second end for stating solenoid driver circuit ECU is connect with one end of the electromagnet coil winding, the electromagnet coil winding
The other end connect with the contact B of the relay, one end of the LCR testers is connect with the contact C of the relay, institute
The other end for stating LCR testers is connect with one end of the delay protection circuit, the other end of the delay protection circuit and institute
It states electromagnet temperature and rises the control device connection tested automatically,
The relay is used to after the control instruction for receiving the control device that the electromagnet temperature liter is tested automatically change
Become the connection relation of contact；
The LCR testers are used to test the resistance value of the electromagnet coil winding；
Connection of the delay protection circuit for be delayed the LCR testers and the electromagnet coil winding.
Preferably, the electromagnet temperature liter Auto-Test System includes：
Power module, the first output end of the power module are connect with the solenoid driver circuit ECU, the power supply
The second output terminal of module rises the control device tested automatically with the electromagnet temperature and connect, and the power module is used for described
Solenoid driver circuit ECU and the electromagnet temperature rise the control device tested automatically and provide power supply supply；
Data storage circuitry, the data storage circuitry rise the control device tested automatically with the electromagnet temperature and connect,
Terminate resistance value for storing initial resistance value and test；
Data transmission module, the data transmission module are connect with the data storage circuitry, for outside into line number
According to transmission；
Host computer, the host computer rise the control device tested automatically with the electromagnet temperature and connect, be used for the electricity
Magnet temperature rises the control device tested automatically and sends temperature liter testing and control parameter.
Preferably, it includes microcontroller that the electromagnet temperature, which rises the control device tested automatically,.
Electromagnet temperature provided by the invention rises the control method tested automatically, can pass through the temperature to electromagnet coil winding
The control of test is risen so that the test process of electromagnet coil winding carries out automatically, and the data measured can be read out with
It preserves, improves the accuracy that temperature rises test result.In addition, the power-off delay protection of LCR testers can be realized, to improve
The safety of test.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the flow chart that electromagnet temperature provided by the invention rises the control method tested automatically.
Fig. 2 is the structural schematic diagram that electromagnet temperature provided by the invention rises the control device tested automatically.
Fig. 3 is the structural schematic diagram that electromagnet temperature provided by the invention rises Auto-Test System.
Fig. 4 is the flow chart that electromagnet temperature provided by the invention rises that Auto-Test System is tested.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
As the first aspect of the invention, a kind of control method that electromagnet temperature liter is tested automatically is provided, wherein electromagnetism
It includes solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay and delay that iron temperature, which rises Auto-Test System,
It includes contact A, contact B and contact C to protect circuit, the relay, the solenoid driver circuit ECU and the relay
Contact A connects, and the electromagnet coil winding is connect with the contact B of the relay, the LCR testers and the relay
Contact C connections, the delay protection circuit is connect with the LCR testers, as shown in Figure 1, the control method includes：
S100, electromagnet temperature liter testing and control parameter is obtained, wherein it includes that electromagnet is quiet that the temperature, which rises testing and control parameter,
Set time, high temperature seating time, test interval, the first number of test points and the second number of test points；
S110, the monitoring electromagnet time of repose；
S120, judge whether the electromagnet time of repose reaches default time of repose；
If S130, the electromagnet time of repose reach default time of repose, sends to the relay and touched described
The control instruction that point B and the contact C are attached；
S140, the control instruction that the initial resistivity value for testing the electromagnet coil winding is sent to the LCR testers；
Specifically, after the contact B of the relay is connected with the contact C, be equivalent to the LCR testers with it is described
Electromagnet coil winding connects, and therefore, is tested to the LCR to send the initial resistivity value for testing the electromagnet coil winding
Control instruction.
S150, record simultaneously preserve the initial resistivity value；
The initial resistivity value of the LCR electromagnet coil windings tested is recorded, and controls data storage
Circuit preserves the initial resistivity value.
S160, the control instruction for being attached the contact A and the contact B is sent to the relay；
Specifically, when the initial resistivity value test after the completion of, to the relay send by the contact B and it is described touch
Point C disconnects the control instruction for then connecting the contact A with the contact B.
S170, the monitoring high temperature seating time；
Specifically, after the contact A of the relay is connected with the contact B, it is equivalent to the solenoid driver circuit
ECU is connected with the electromagnet coil winding, therefore, starts the high temperature seating time for monitoring the electromagnet coil winding.
S180, judge whether the high temperature seating time reaches the default seating time；
If S190, the high temperature seating time reach the default seating time, being sent to the relay will be described
The control instruction that contact B and the contact C are attached, and send the LCR testers and institute to the delay protection circuit
State the control instruction of electromagnet coil winding delay connection；
Specifically, after the high temperature seating time monitored reaching the default seating time, stop monitoring, to it is described after
The control instruction that electric appliance sending port contact A and the contact B are disconnected, and control the contact B and the contact C of the relay
Connection, meanwhile, the inverse electromotive force that the electromagnet coil winding shutdown transient generates in order to prevent, to delay protection electricity
Road sends control instruction, so that company of the delay protection circuit to the LCR testers and the electromagnet coil winding
Tap into line delay protection.
S200, the control that the test end resistance value for testing the electromagnet coil winding is sent to the LCR testers
Instruction；
Specifically, after the contact B is connected with the contact C, the LCR testers and the electromagnetism iron wire are equivalent to
Circle winding is connected, and therefore, the test that the test electromagnet coil winding is sent to the LCR testers terminates resistance
The control instruction of value.
S210, record simultaneously preserve the test end resistance value.
Specifically, terminate resistance value to the test of above-mentioned test to be recorded and read out, to be carried out according to the resistance value
The calculating of electromagnet coil winding temperature rise.
Electromagnet temperature provided by the invention rises the control method tested automatically, can pass through the temperature to electromagnet coil winding
The control of test is risen so that the test process of electromagnet coil winding carries out automatically, and the data measured can be read out with
It preserves, improves the accuracy that temperature rises test result.In addition, the power-off delay protection of LCR testers can be realized, to improve
The safety of test.
Specifically, it is calculated to realize that the temperature of the electromagnet coil winding rises, the control method further includes described
It records and preserves after the test terminates resistance value and carry out：
It reads the initial resistivity value and the test terminates resistance value；
Terminate resistance value according to the mathematical model of Test of Temperature Rise for Electromagnet, the initial resistivity value and the test and calculates institute
State the Wen Sheng of electromagnet coil winding.
Further specifically, the mathematical model of the electromagnet temperature experiment is：
Wherein, Δ t indicates the Wen Sheng, R of the electromagnet coil winding1Indicate the initial resistivity value, R2Indicate the survey
Examination terminates resistance value, and θ indicates the temperature coefficient of the electromagnet coil winding, and θ=256.41, T1It indicates when test starts
Environment temperature, T2Indicate the environment temperature at the end of test.
Specifically, the control instruction of the initial resistivity value of the test electromagnet coil winding includes：
The initial electricity of the several electromagnet coil windings of first test point is tested according to the test interval
Resistance value.
Specifically, the test that the test electromagnet coil winding is sent to the LCR testers terminates resistance value
Control instruction include：
The test knot of the several electromagnet coil windings of second test point is tested according to the test interval
Beam resistance value.
As the second aspect of the invention, a kind of control device that electromagnet temperature liter is tested automatically is provided, wherein electromagnetism
It includes solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay and delay that iron temperature, which rises Auto-Test System,
It includes contact A, contact B and contact C to protect circuit, the relay, the solenoid driver circuit ECU and the relay
Contact A connects, and the electromagnet coil winding is connect with the contact B of the relay, the LCR testers and the relay
Contact C connections, the delay protection circuit is connect with the LCR testers, as shown in Fig. 2, the control device 4 includes：
Parameter acquisition module 100, the parameter acquisition module 100 rise testing and control parameter for obtaining electromagnet temperature,
Described in temperature rise testing and control parameter include electromagnet time of repose, high temperature seating time, test interval, the first test point
Number and the second number of test points；
First monitoring modular 110, first monitoring modular 110 is for monitoring the electromagnet time of repose；
First judgment module 120, first judgment module 120 is for judging whether the electromagnet time of repose reaches
Default time of repose；
First instruction sending module 130, if first instruction sending module 130 is reached for the electromagnet time of repose
To default time of repose, then the control instruction for being attached the contact B and the contact C is sent to the relay；
Second instruction sending module 140, second instruction sending module 140 are used to send to the LCR testers and survey
Try the control instruction of the initial resistivity value of the electromagnet coil winding；
First record and preserving module 150, first record are described initial for recording and preserving with preserving module 150
Resistance value；
Third instruction sending module 160, the third instruction sending module 160 is used to send to the relay will be described
The control instruction that contact A and the contact B are attached；
Second monitoring modular 170, second monitoring modular 170 is for monitoring the high temperature seating time；
Second judgment module 180, second judgment module 180 is for judging whether the high temperature seating time reaches pre-
If the seating time；
4th instruction sending module 190, if the 4th instruction sending module 190 reaches for the high temperature seating time
The default seating time then sends the control instruction for being attached the contact B and the contact C to the relay,
And the control instruction of the LCR testers and electromagnet coil winding delay connection is sent to the delay protection circuit；
5th instruction sending module 200, the 5th instruction sending module 200 are used to send to the LCR testers and survey
The test for trying the electromagnet coil winding terminates the control instruction of resistance value；
Second record and preserving module 210, second record is with preserving module 210 for recording and preserving the test
Terminate resistance value.
Electromagnet temperature provided by the invention rises the control device tested automatically, can pass through the temperature to electromagnet coil winding
The control of test is risen so that the test process of electromagnet coil winding carries out automatically, and the data measured can be read out with
It preserves, improves the accuracy that temperature rises test result.In addition, the power-off delay protection of LCR testers can be realized, to improve
The safety of test.
Specifically, the control device further includes：
Read module, the read module terminate resistance value for reading the initial resistivity value and the test；
Computing module, the computing module is for mathematical model, the initial resistivity value according to Test of Temperature Rise for Electromagnet
Terminate the Wen Sheng that resistance value calculates the electromagnet coil winding with the test.
As the third aspect of the invention, a kind of electromagnet temperature liter Auto-Test System is provided, wherein as shown in figure 3,
The electromagnet temperature rises Auto-Test System 20：Solenoid driver circuit ECU 7, electromagnet coil winding 9, LCR tests
Instrument 8, relay 5, delay protection circuit 10 and previously described electromagnet temperature rise the control device 4 tested automatically,
The relay 5 includes contact A, contact B and contact C, the electromagnet temperature rise the control device 4 tested automatically with
The control terminal of the relay 5 connects, and the first end of the solenoid driver circuit ECU 7 connects with the contact A of the relay 5
It connects, the second end of the solenoid driver circuit ECU 7 is connect with one end of the electromagnet coil winding 9, the electromagnet
Coil is connect around 9 other end with the contact B of the relay 5, one end of the LCR testers 8 and touching for the relay 5
Point C connections, the other end of the LCR testers 8 are connect with one end of the delay protection circuit 10, the delay protection circuit
10 other end rises the control device 4 tested automatically with the electromagnet temperature and connect,
The relay 5 is used for after the control instruction for receiving the control device 4 that the electromagnet temperature liter is tested automatically
Change the connection relation of contact；
The LCR testers 8 are used to test the resistance value of the electromagnet coil winding；
Connection of the delay protection circuit 10 for be delayed the LCR testers 8 and the electromagnet coil winding 9.
In order to realize that electromagnet temperature rises the normal work of Auto-Test System, and the functions such as storage and data transmission, such as
Shown in Fig. 3, the electromagnet temperature rises Auto-Test System and includes：
Power module 6, the first output end of the power module 6 is connect with the solenoid driver circuit ECU 7, described
The second output terminal of power module 6 rises the control device 4 tested automatically with the electromagnet temperature and connect, and the power module 6 is used
Power supply supply is provided in rising the control device 4 tested automatically to the solenoid driver circuit ECU 7 and the electromagnet temperature；
Data storage circuitry 2, the data storage circuitry 2 rise the control device 4 tested automatically with the electromagnet temperature and connect
It connects, terminates resistance value for storing initial resistance value and test；
Data transmission module 1, the data transmission module 1 are connect with the data storage circuitry 2, for being carried out with outside
Data transmission；
Host computer 3, the host computer 3 rise the control device 4 tested automatically with the electromagnet temperature and connect, be used for described
Electromagnet temperature rises the control device 4 tested automatically and sends temperature liter testing and control parameter.
It is sent it is understood that the host computer 3 can also rise the control device 4 tested automatically to the electromagnet temperature
Some instructions for example, rising the control device 4 tested automatically to the electromagnet temperature sends the instruction that test starts, or are sent
The instruction interrupted is tested, or sends the instruction etc. that test terminates.
Preferably, it includes microcontroller that the electromagnet temperature, which rises the control device 4 tested automatically,.
Preferably, the data transmission module 1 includes USB interface.It is understood that 1 energy of the data transmission module
Enough realize exports the data in the data storage circuitry 2, or external data are imported into the data storage circuitry 2
In.The data transmission module 1 can also be other kinds of data transmission interface, or can realize data transmission
WIFI interface, blue tooth interface etc..
Preferably, the host computer 3 includes touch screen, can set temperature by the touch screen and rise testing and control parameter,
And electromagnet coil winding is observed by the touch screen and carries out the variation etc. that temperature rises some parameters of test process.
The operation principle for rising Auto-Test System to electromagnet temperature provided by the invention with reference to Fig. 3 and Fig. 4 carries out in detail
It describes in detail bright.
As shown in figure 3, by taking the control device 4 that electromagnet temperature liter is tested automatically is microcontroller as an example, using microcontroller
It controls the break-make of relay 5, to come the switching between controlling Test of Temperature Rise for Electromagnet and measuring, and reads and preserve automatically
Test data realizes intelligent automatic control.
Specifically, each test module is attached by test first before starting, and opens total power switch, and system carries out just
Then beginningization sets temperature by the display interface of host computer 3 and rises testing and control parameter, such as setting electromagnet time of repose Ta、
High temperature seating time Tb, test interval TcAnd the first number of test points N1, the second number of test points N2.In display circle of host computer 3
START button is clicked on face, system automatically begins to be tested, and microcontroller constantly monitors electromagnet time of repose Ta, work as prison
Measure time of repose TaReach setting time of repose, microcontroller sends a control instruction to relay 5 so that relay 5
Contact B is connected with contact C, and at this moment LCR testers 8 are directly connected with electromagnet coil winding 9, and microcontroller sends a control
To LCR testers 8, LCR testers 8 start to test the initial resistance R of electromagnet coil winding 9 automatically for system instruction1, according to before
The test interval T of settingcTest N1A resistance value, and automatically save test data.
Following microcontroller sends a control instruction to relay 5 again so that the contact B and contact C of relay are disconnected
Connection is opened, contact A is connected with contact B, and electromagnet coil winding 9 disconnects the connection with LCR testers 8, then connects electromagnetism
Iron driving circuit ECU 7 proceeds by temperature and rises running-in test.And microcontroller constantly carries out system inspection in this test process
It surveys, by detection power module 6 come the Current Voltage of detecting system, when monitoring that Current Voltage has unusual fluctuations, system meeting
Automatic cut-off power circuit, it is ensured that the safety of whole system carries out temperature liter examination automatically in the case where unmanned nurse
It tests.
This external system can detect temperature and rise seating time Tb, when monitoring seating time TbReach default seating time, microcontroller
It sends a control instruction to disconnect to relay 5, contact A and contact B, contact B is connected with contact C, electromagnet coil
Winding 9 disconnects the connection with solenoid driver circuit ECU 7, then connects LCR testers 8.Microcontroller can control delay simultaneously
Circuit 10 is protected, LCR testers 8 will not be allowed to be connected with 9 horse back of electromagnet coil winding, because in electromagnet coil winding 9
Shutdown transient will produce one inverse electromotive force in electromagnet coil winding 9, to prevent the reversed electricity of coil windings shutdown transient
Damage of the kinetic potential to LCR testers 8.Delay protection circuit 10 can start to connect LCR testers 8 and coil windings after being delayed 5s
9, and the test for starting to test the electromagnet coil winding after temperature liter is tested at once terminates resistance value R2, and according to warm before
Rise the test interval T in testing and control parameter settingcCarry out test N2A numerical value, and preserve test data.To this group temperature
Off-test is risen, the program that following system is set before selects next operating point to continue temperature and rises test, or cut-out
Power module 6 terminates entire test.
The particular flow sheet of above-mentioned test is as shown in Figure 4.
Therefore, electromagnet temperature provided by the invention rises Auto-Test System, due to being touched using microcontroller to control relay
The switching of point, avoids the error of manual operation, can input controlling test parameter in advance by host computer in addition so that test can
It is performed fully automatic, and data preservation can be carried out automatically, liberated labour significantly；Temperature is carried out using electric-resistivity method and rises test, is kept away
Thermocouple method is exempted from since randomness of layouting is with the error brought, test result is more reliable, more has ginseng to design and research work
Examine meaning；The present invention increases delay protection circuit before LCR test equipments, avoids the reversed electricity in shutdown transient coil windings
Damage of the kinetic potential to LCR test equipments；In addition LCR test equipments not only can also test inductance, capacitance with test resistance value
Etc. other parameters, the present disclosure applies equally to the experiments of other relevant parameters；Microcontroller simultaneous real-time monitoring power supply mould in testing
Block can be automatically cut off the power when having monitored abnormal voltage electric current, ensure that automaticity and the safety of experiment.
During electromagnet temperature rises and tests, carries out temperature by using said program and rise test so that test accuracy
It greatly improves, it can be achieved that test error control is within ± 5%；In addition power failure protection module protects the peace of entire test system
Entirely, it can be achieved that full-automatic testing, has liberated labour significantly, testing efficiency is improved.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, in the essence for not departing from the present invention
In the case of refreshing and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of electromagnet temperature rises the control method tested automatically, which is characterized in that electromagnet temperature rises Auto-Test System and includes
Solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay and delay protection circuit, the relay packet
Contact A, contact B and contact C are included, the solenoid driver circuit ECU is connect with the contact A of the relay, the electromagnet
Coil windings are connect with the contact B of the relay, and the LCR testers are connect with the contact C of the relay, the delay
Protection circuit is connect with the LCR testers, and the control method includes：
It obtains electromagnet temperature and rises testing and control parameter, wherein it includes electromagnet time of repose, height that the temperature, which rises testing and control parameter,
Warm seating time, test interval, the first number of test points and the second number of test points；
Monitor the electromagnet time of repose；
Judge whether the electromagnet time of repose reaches default time of repose；
If the electromagnet time of repose reaches default time of repose, sent to the relay by the contact B and described
The control instruction that contact C is attached；
The control instruction for the initial resistivity value for testing the electromagnet coil winding is sent to the LCR testers；
It records and preserves the initial resistivity value；
The control instruction for being attached the contact A and the contact B is sent to the relay；
Monitor the high temperature seating time；
Judge whether the high temperature seating time reaches the default seating time；
If the high temperature seating time reaches the default seating time, sent to the relay by the contact B and institute
The control instruction that contact C is attached is stated, and the LCR testers and the electromagnetism iron wire are sent to the delay protection circuit
Enclose the control instruction of winding delay connection；
The control instruction for the test end resistance value for testing the electromagnet coil winding is sent to the LCR testers；
It records and preserves the test and terminate resistance value.
2. control method according to claim 1, which is characterized in that the control method further includes in the record and protecting
It deposits after the test terminates resistance value and carries out：
It reads the initial resistivity value and the test terminates resistance value；
Terminate resistance value according to the mathematical model of Test of Temperature Rise for Electromagnet, the initial resistivity value and the test and calculates the electricity
The Wen Sheng of magnet coil winding.
3. control method according to claim 2, which is characterized in that the mathematical model of electromagnet temperature experiment is：
Wherein, Δ t indicates the Wen Sheng, R of the electromagnet coil winding1Indicate the initial resistivity value, R2Indicate the test knot
Beam resistance value, θ indicate the temperature coefficient of the electromagnet coil winding, and θ=256.41, T1Indicate environment when test starts
Temperature, T2Indicate the environment temperature at the end of test.
4. control method as claimed in any of claims 1 to 3, which is characterized in that the test electromagnet
The control instruction of the initial resistivity value of coil windings includes：
The initial resistivity value of the several electromagnet coil windings of first test point is tested according to the test interval.
5. control method as claimed in any of claims 1 to 3, which is characterized in that described to the LCR testers
It sends and tests the test of the electromagnet coil winding and terminate the control instruction of resistance value and include：
The test that the several electromagnet coil windings of second test point are tested according to the test interval terminates electricity
Resistance value.
6. a kind of electromagnet temperature rises the control device tested automatically, which is characterized in that electromagnet temperature rises Auto-Test System and includes
Solenoid driver circuit ECU, electromagnet coil winding, LCR testers, relay and delay protection circuit, the relay packet
Contact A, contact B and contact C are included, the solenoid driver circuit ECU is connect with the contact A of the relay, the electromagnet
Coil windings are connect with the contact B of the relay, and the LCR testers are connect with the contact C of the relay, the delay
Protection circuit is connect with the LCR testers, and the control device includes：
Parameter acquisition module, the parameter acquisition module rises testing and control parameter for obtaining electromagnet temperature, wherein the temperature rises
Testing and control parameter includes electromagnet time of repose, high temperature seating time, test interval, the first number of test points and the second survey
Pilot number；
First monitoring modular, first monitoring modular is for monitoring the electromagnet time of repose；
First judgment module, when first judgment module is for judging whether the electromagnet time of repose reaches default standing
Between；
First instruction sending module, if first instruction sending module reaches default standing for the electromagnet time of repose
Time then sends the control instruction for being attached the contact B and the contact C to the relay；
Second instruction sending module, second instruction sending module, which is used to send to the LCR testers, tests the electromagnetism
The control instruction of the initial resistivity value of iron coil winding；
First record and preserving module, first record is with preserving module for recording and preserving the initial resistivity value；
Third instruction sending module, the third instruction sending module are used to send the contact A and institute to the relay
State the control instruction that contact B is attached；
Second monitoring modular, second monitoring modular is for monitoring the high temperature seating time；
Second judgment module, second judgment module is for when judging whether the high temperature seating time reaches default running-in
Between；
4th instruction sending module, if the 4th instruction sending module reaches the default race for the high temperature seating time
The time is closed, then sends the control instruction for being attached the contact B and the contact C to the relay, and prolong to described
When protection circuit send the control instruction of the LCR testers and the electromagnet coil winding delay connection；
5th instruction sending module, the 5th instruction sending module, which is used to send to the LCR testers, tests the electromagnetism
The test of iron coil winding terminates the control instruction of resistance value；
Second record and preserving module, second record terminate resistance with preserving module for recording and preserving the test
Value.
7. control device according to claim 6, which is characterized in that the control device further includes：
Read module, the read module terminate resistance value for reading the initial resistivity value and the test；
Computing module, the computing module are used for mathematical model, the initial resistivity value and institute according to Test of Temperature Rise for Electromagnet
It states test and terminates the Wen Sheng that resistance value calculates the electromagnet coil winding.
8. a kind of electromagnet temperature rises Auto-Test System, which is characterized in that the electromagnet temperature rises Auto-Test System and includes：Electricity
Magnet driving circuit ECU, electromagnet coil winding, LCR testers, relay, delay protection circuit and claim 6 or 7 institutes
The electromagnet temperature stated rises the control device tested automatically,
The relay includes contact A, contact B and contact C, the electromagnet temperature rise the control device tested automatically with it is described after
The control terminal of electric appliance connects, and the first end of the solenoid driver circuit ECU is connect with the contact A of the relay, the electricity
The second end of magnet driving circuit ECU is connect with one end of the electromagnet coil winding, the electromagnet coil winding it is another
One end is connect with the contact B of the relay, and one end of the LCR testers is connect with the contact C of the relay, described
The other end of LCR testers is connect with one end of the delay protection circuit, the other end of the delay protection circuit with it is described
Electromagnet temperature rises the control device connection tested automatically,
The relay is used to after the control instruction for receiving the control device that the electromagnet temperature liter is tested automatically change to touch
The connection relation of point；
The LCR testers are used to test the resistance value of the electromagnet coil winding；
Connection of the delay protection circuit for be delayed the LCR testers and the electromagnet coil winding.
9. electromagnet temperature according to claim 8 rises Auto-Test System, which is characterized in that the electromagnet temperature rises automatic
Test system includes：
Power module, the first output end of the power module are connect with the solenoid driver circuit ECU, the power module
Second output terminal and the electromagnet temperature rise the control device tested automatically and connect, the power module is for the electromagnetism
Iron driving circuit ECU and the electromagnet temperature rise the control device tested automatically and provide power supply supply；
Data storage circuitry, the data storage circuitry rise the control device tested automatically with the electromagnet temperature and connect, be used for
Storing initial resistance value and test terminate resistance value；
Data transmission module, the data transmission module are connect with the data storage circuitry, for carrying out data biography with outside
It is defeated；
Host computer, the host computer rise the control device tested automatically with the electromagnet temperature and connect, be used for the electromagnet
Temperature rises the control device tested automatically and sends temperature liter testing and control parameter.
10. electromagnet temperature according to claim 8 or claim 9 rises Auto-Test System, which is characterized in that the electromagnet Wen Sheng
Automatically the control device tested includes microcontroller.
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| RU2718597C1 (en) * | 2019-11-26 | 2020-04-08 | Акционерное общество"Корпорация "Московский институт теплотехники" (АО "Корпорация "МИТ") | Method for monitoring temperature of electromagnet winding and device for its implementation |
| CN111044817A (en) * | 2019-12-10 | 2020-04-21 | 格力电器（武汉）有限公司 | Temperature rise test system and test method |
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| CN108375422B (en) | 2019-10-29 |
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